How to Fix Login Invalid Error When Accessing cPanel

Do you see a "Login Invalid" error when trying to access cPanel ? This problem can affect users of shared hosting and users with root access. This guide reviews common causes and troubleshooting steps to help restore access.

Common causes of Login Invalid

1. Incorrect credentials

A common reason is an incorrect username or password, caused by:

• Typing or capitalization errors

• Recently changed credentials not updated in your tools

• A forgotten username or password

2. Browser cache problems

Your browser may be affected by:

• Outdated cached sign-in data

• Incorrect saved credentials

• Cookie conflicts

3. IP blocking (cPHulk protection)

Built-in security features can block legitimate sign-in attempts because of:

• Repeated failed attempts causing a lockout

• IP address restrictions

• Automatic brute-force protection

4. DNS or domain configuration problems

Server-side issues can include:

• DNS configuration errors

• Incorrect domain pointing

• Server maintenance or an outage

Troubleshoot Login Invalid

For shared hosting users

1. Check your credentials

   • Carefully check your username and password.

   • Remove extra spaces and correct typing errors.

2. Clear the browser cache

   • Clear cached data and cookies.

   • Alternatively, try a private or incognito browser window.

3. Check DNS settings

   • Confirm your domain's DNS settings are correct.

   • Check that its A or CNAME record points to the correct server.

4. Contact hosting support

   • If the issue continues, contact our support.

   • They can help with password recovery or IP-blocking checks.

For administrators with root access

cPanel uses cPHulk to protect against brute-force attacks.. It can block accounts or IP addresses after repeated failed sign-ins.

1. Access the server through SSH - Sign in through SSH using your authorized root access.

2. Allowlist your IP in cPHulk - In WHM, open Security Center > cPHulk Brute Force Protection and check whether your account or IP is blocked. An administrator can also use the following command to allowlist a trusted IP:

   /usr/local/cpanel/scripts/cphulkdwhitelist <Your-IP-Address>

   Replace <Your-IP-Address> with your actual IP address.

3. Review sign-in logs - Review sign-in attempts using:

   tail -f /usr/local/cpanel/logs/login_log

   This displays sign-in attempts and associated errors in real time.

4. Check DNS and server configuration

   • Confirm the domain's DNS configuration.

   • Check the server hostname and IP address.

Login Invalid can often be resolved by checking credentials, browser data, security restrictions and the correct server address.

If it persists, contact your hosting provider with the specific error and circumstances. Their knowledge of the system can help resolve it.